I know you do not intend to add this feature, but you can help me to add myself? Please.

I refer to the brackets [ and ] which lie between the prefix in the page title in the browser

I know I could add "[" and "]" to create a prefix but use black theme is showing the brackets and I just wanted them in the page title. I found this part of the code in listener.php, I think it is here that change. If it is not too difficult, you can help me with this?